"immediate" attribute is available in almost all user input JSF tags. This attribute is commonly called "Event Handling Attribute". The valid values for this attribute is either "true" or "false". If value of this property is set to "true", then the validation, conversion, and events associated with these components takes place in this phase instead of the Process Validation Phase.
Eg. Suppose you have a cancel button that ignores all form values then we used this attribute.
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